WorkflowQueuingService WorkflowQueuingService WorkflowQueuingService WorkflowQueuingService Class



This API is now obsolete.

Provides the services for management of WorkflowQueue objects.

public ref class WorkflowQueuingService
[System.Obsolete("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")]
public class WorkflowQueuingService
type WorkflowQueuingService = class
Public Class WorkflowQueuingService


The following code example demonstrates a method, named CreateQueue, that initializes a WorkflowQueuingService object by calling the ActivityExecutionContext.GetService method. The code then uses the Exists method to determine if a WorkflowQueue with a specified name exists. If it does not exist, the code calls the CreateWorkflowQueue method; if it does the code calls the GetWorkflowQueue method.

This code example is part of the File Watcher Activity SDK Sample from the FileSystemEvent.cs file. For more information, see File System Watcher Activity.

private WorkflowQueue CreateQueue(ActivityExecutionContext context)
    WorkflowQueuingService qService = context.GetService<WorkflowQueuingService>();

    if (!qService.Exists(this.QueueName))
        qService.CreateWorkflowQueue(this.QueueName, true);

    return qService.GetWorkflowQueue(this.QueueName);
Private Function CreateQueue(ByVal context As ActivityExecutionContext) As WorkflowQueue
    Dim qService As WorkflowQueuingService = context.GetService(Of WorkflowQueuingService)()

    If Not qService.Exists(Me.queueName) Then
        qService.CreateWorkflowQueue(Me.queueName, True)
    End If

    Return qService.GetWorkflowQueue(Me.QueueName)
End Function



This material discusses types and namespaces that are obsolete. For more information, see Deprecated Types in Windows Workflow Foundation 4.5.

WorkflowQueuingService provides methods that you can use to manage the workflow queues associated with a workflow instance.


PendingMessagesProperty PendingMessagesProperty PendingMessagesProperty PendingMessagesProperty

Contains the unconsumed items in the workflow queues associated with this WorkflowQueuingService.


CreateWorkflowQueue(IComparable, Boolean) CreateWorkflowQueue(IComparable, Boolean) CreateWorkflowQueue(IComparable, Boolean) CreateWorkflowQueue(IComparable, Boolean)

Creates a WorkflowQueue by using the specified name and transactional scope.

DeleteWorkflowQueue(IComparable) DeleteWorkflowQueue(IComparable) DeleteWorkflowQueue(IComparable) DeleteWorkflowQueue(IComparable)

Deletes the specified WorkflowQueue.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
Exists(IComparable) Exists(IComparable) Exists(IComparable) Exists(IComparable)

Tests for the existence of the specified WorkflowQueue.

GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Gets the Type of the current instance.

(Inherited from Object)
GetWorkflowQueue(IComparable) GetWorkflowQueue(IComparable) GetWorkflowQueue(IComparable) GetWorkflowQueue(IComparable)

Retrieves the specified WorkflowQueue.

MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Returns a string that represents the current object.

(Inherited from Object)

Applies to

See also